Electric regulation.



J. L, UREVBLING.

ELECTRIC REGULATION.

APPLICATION FILED JULY 27, 1910.

WITNESSES INVENTOR UNITED STATES PATENT OFFICE.

JOHN L. CREVELING, OF NEW YORK, N. Y.,

ASSIGNOR T0 SAFETY CAR- HEATING AND LIGHTING COMPANY, A CORPORATION OF NEW JERSEY.

ELECTRIC REGULATION.

Specification of Letters Patent.

Patented Nov. 28, 1911.

-Application filed July 27, 191i). Serial No. 5%,040.

My invention pertains to that class of electric regulation in which it is desired to automatically hold the voltage upon, or the current in, a circuit substantially constant throughout wide ranges in change of voltage at the source feeding said circuit and throughout wide changes in load upon said circuit.

My invention has for its particular ob ject to providenmeans of regulation as above set forth which shall be automatic, simple and durable and have a wide range of action.

As my invention is particularly applicable to systems of electric distribution wherein a generator is used to charge a storage battery and supply lamps or other translating devices, it Will be described in connection with such. a system.

The drawing is a diagrammatic represen tation of a system of electric distribution embodying my invention.

In the drawing l repre'sents any suitable type of dynamo or generator from the posi tive brush of which the lead 2 is carried. to one side of the storage battery 3 and one side of the lampsor translating devices 4:- The other side of the lamps or translating devices is connected as by the main 5.to one side of the windings of electromagnet 6, the other side of which is connected as by wire 7 to one end of the carbon pile 8. The opposite end of the carbon pile 8 is connected as by wire 9 with switch contact 10 adapted to make contact with the armature 11 electricallv connected as by wire 12 with one end oi the carbon pile 13, the other end of which is connected as bylead 14; with the negative side of the storage battery 3 and the negative pole ofthe generator, 1.' The adjustable spring 15 tends to hold the armature 11 away from the magnet 6 and in contact with the contact member 10. The

wire 16 is carried from thelead 14- to con: tact member 17. The, adjacent contact,

meniber T8 is connected as by wire 19 with the contact member 10. The wire 7 is con 'nected with the contact 2O as by wire 21.

The armature I1 is provided with the contact member 22 insulated therefrom as shown and adapted, when 11 is raised by the action of magnet 6, to cause electrical communication between contacts 17 and 18*at the same timethat the lever 11 makes contact with 20. The carbon piles 8 and 13 are held at one end against a stationary insulating member 23 and at the other end. they have in contact therewith the movable insulating member 24 connected with the bell-crank lever 25 normally drawn in a downward direction by the adjustable spring 26 which tends to increase the pressure upon the said carbon piles in such manner as to reduce the resist-- ance thereof. y

27 is a movable core of magnetic material carried bythe lever 25 and surrounded. by a coil 28 in shunt across the translation circuit as by wires 29 and 30..

The operation of this system embodying my invention is substantially as follows starting with the generator'supplying current to the battery and to the lamps or translating devices which we will consider at first as few in number and constituting a light load: Under these conditions current wlll flow from the generator through lead 2 to the storage battery 3 and one side of the translating devices 42, thence through main 5.to magnet 6. From the opposite side of 6 current will flow through 7 to one side of the carbon pile 8, through the pile 8 to wire 9 andthence to the contact member 10 and from 10 through lever 11. and wire 12 to one side of the carbon pile 13 and from the other side of the said pile through lead 145130 the negative side of the storage battery 3 and generator 1. Current will also flow from prevent any further rise therein and thus ge upon the translating constant throughout rise 'encrator circuit i iile when the batteries ei fully charged sin. ab re outlined operaion )"(l, the carbon piles o this our exceeds carbon rc- Mn. 1 K 4- ascu, anu n is use once muy he uce the desired drop noun manner, then c the urnutrre 11 old instuntlt n' t "'orag buttery an .lutn devices el and eturn Wire 19, contacts 18, v it lead 1st to one side tery 3 and generator 1 :e Ll, contact :20, lever pile l3 ant capacity \"as betore the load is that 1 H121? use l as indicated at S departing tom the invention. Two p les re dltifihlg for sake ct he obvious that Wide departure istunce made in the matter of design and "tic-n "u out departing from the mentio WlllCli is shown in is desired 5 cuit comprehending ing units in o comprehcndin;

ovel and. desire to cover Letters Patent i set forth in the following cleim..:

l. A regulator for an elect 'ic circuit coinprehending a plurality of regulating units responsive to oltage i'luctuctim s and means for varying the mutual relation of said units depending u pen the loud upon said circuit.

2. cleans l? rcgulctuw an electric cu.- cuit QOIUplQlViEl 1g :1 pluru regulat- .(6 relation to said ci"- automatic Jeans for operating said 'ts and means for altering the mutual of said plurality of regulating s depending upon conditions in the cire regulated. I o. .wleans tor egulcting an electric cirplut'ulity of resistors in operative relation thereto. means for operating said resistors responsive to varietions in said circuit and automatic means for varying the mutual relation of said 11* sisters depending upon the current in said ci cuit.

1 .l v e. .l leans tor re tri circuit istorc, uutomutic means or gov ae esistuncc thereof urd automatic means for altering the mutual relation of said resistors dep ndint; upon the ciiu'rent in said circuit.

Means for regulating an electric circuit comprehending a. plurality of circuit controlling means means for operuing the same and automatic means responsive to fluctuations in said circuit for connecting circuitreguluting means in eerie und in. multiple with each. other.

6. Means for regulating an electric cir .uit compare iending aplurality of cur-hon pile resistances in operative relation to said ciruit, automatic means for varying the resist" 11cc of said piles and eutomutic means responsive to the conditions in said circuit o? governing the mutual relationship of did carbon piles.

7. Means for governing an electric circuit comprehending a plurality of circuit conro ling means, 2 common means for operatirg said controlling means and automatic means depending upon circuit conditions for governing the mutual relationship of said controlling means.

8. Means for regulating an electric :ircuit comprehending a. plurality of units jointly affecting suid circuit, means for controlling the joint. effect or" said units and automatic "re-ans for varying the mutual relationship of said units.

9. Means for regulating an electric circuit comprehending a plurality of units jointly v aticctin suid circuit, means for controlling the joint. effect of said units and automatic means ailected by load changes upon said circuit for arguing the mutual rela tionship of said units.

10. Means for regulating an electric circuit comprehending a plurality of units jointly affecting said circuit, means responsive to voltage fluctuations across said circuit for operating the same, means for controlling the joint effect of said units and automatic meansraflected b load changes upon said circuit for varying the mutual relationship of said units.

11 Means for regulating an electric circuit com rehending a plurality of units jointly a eating said circuit, a coil responsive to fluctuations in said circuit for operating' said units and means responsive to the current in said circuit for altering the mutual relations of said units.

12. Means for regulating an electric circuit comprehending a plurality of regulating units in said circuit, a coil in: shunt across said circuit for operating said units and a coil in series with said circuit for altering the mutual relationship of said units.

1.3. The combination with a feeding circuit and a Work circuit, of a regulator for: the Work circuit comprehending a plurality of regulating units jointly affecting said circuit, means for affecting said units responsave to voltagefiuctuations across said. circuit andnieans for controlling the mutual relationship of said units responsive to current fluctuations in said circuit.

JOHN L. CREVELING. Witnesses:

M. HILLOGK, E.. HALL.

Copies of mi patent may be obtained for five cents each, by addressing the .Gommissioner of Patents,

Washington, D. C. I 

